Malicious PDF — malware analysis report

Static analysis result for SHA-256 0672daedc569816a…

MALICIOUS

PDF

86.8 KB Created: 2021-03-29 05:08:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ebf486e94ff88897112d9becd9307ce2 SHA-1: 55ecb5f28f7850bb54ee8d549732e940e8b9c895 SHA-256: 0672daedc569816aa72b1bc0a1732e4dcc17ca66f29378ec629aba571f8797ab
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://zajinet.ru/award?keyword=zelda+breath+of+the+wild+walkthrough+book+pdf PDF link annotation
    • https://cdn.sqhk.co/mifodirula/heQbmWE/malikaputu.pdfIn PDF document text
    • http://paxezot.getenjoyment.net/apprendre_l_allemand_seul.pdfIn PDF document text
    • http://jawunefuda.mygamesonline.org/marketing_research_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/hbhhibO/sesivezo.pdfIn PDF document text
    • https://cdn.sqhk.co/gevajoke/gSjfger/pioneer_music_player_car.pdfIn PDF document text
    • http://kosonetibekub.medianewsonline.com/88699916953.pdfIn PDF document text
    • http://womizepivilora.sportsontheweb.net/52188142568.pdfIn PDF document text
    • https://cdn.sqhk.co/sewetotab/NCidjhF/escape_plan_hd_movie.pdfIn PDF document text
    • http://vobafoselalulor.mypressonline.com/ritezulawizumilexapoginu.pdfIn PDF document text
    • http://lexaxak.mywebcommunity.org/56339948298.pdfIn PDF document text
    • https://cdn.sqhk.co/rizitewav/vhichdd/xafofebodezaxigarapajemo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://b133b025-67d1-4190-9e53-fbb99503dec2.filesusr.com/ugd/caf13f_a42f855e413649f4ba3bbc70420b7c3d.pdf?index=trueIn PDF document text
    • https://8eb0ff2f-1b5f-41fb-a82b-bf279dc7f43e.filesusr.com/ugd/868f76_85b10a74842d45cfbec91e8187d68e40.pdf?index=trueIn PDF document text
    • http://nibemodida.myartsonline.com/5507165034.pdfIn PDF document text
    • http://rabatelekovufar.myartsonline.com/mechanics_of_materials_3rd_edition_solutions_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/werezuranazovewezir.pdfIn PDF document text
    • https://f11c4bf2-12a6-49f8-9590-07a94b689168.filesusr.com/ugd/11276f_dcb208bd0d7e4f5bb59286b546bb2ecf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kewakuko/tonir.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/bunty_bains_songs.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/49409969725.pdfIn PDF document text
    • https://a3e8d6b6-68ee-4625-a313-a25a09dbd39d.filesusr.com/ugd/312e12_173e67d0636b474c9ced0e64266bb764.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/3d_car_game_for_mobile.pdfIn PDF document text
    • https://1c896d37-30d1-4b4d-9537-98f963aae812.filesusr.com/ugd/865d50_dcf9f9acc37f43dfbbaa3ed17b402d7d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/paxunu/bopatufew.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C9 5152 bytes
SHA-256: 2a538394256f762a093fd68fb28ab518c12baaf06a5096559515341453b42d72
font_01_sfnt_off00011778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11778 11676 bytes
SHA-256: eb6d75260f335fabe5fda8a8de31e462e575c4cd5a2188eaf3b4d0b8fa8d7984
font_02_sfnt_off00013ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ED6 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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